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Diffstat (limited to 'include/ruby/random.h')
| -rw-r--r-- | include/ruby/random.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/include/ruby/random.h b/include/ruby/random.h new file mode 100644 index 0000000000..bb6cf73bae --- /dev/null +++ b/include/ruby/random.h @@ -0,0 +1,80 @@ +#ifndef RUBY_RANDOM_H +#define RUBY_RANDOM_H 1 +/** + * @file + * @date Sat May 7 11:51:14 JST 2016 + * @copyright 2007-2020 Yukihiro Matsumoto + * @copyright This file is a part of the programming language Ruby. + * Permission is hereby granted, to either redistribute and/or + * modify this file, provided that the conditions mentioned in the + * file COPYING are met. Consult the file for details. + */ + +#include "ruby/ruby.h" + +#if defined(__cplusplus) +extern "C" { +#if 0 +} /* satisfy cc-mode */ +#endif +#endif + +RUBY_SYMBOL_EXPORT_BEGIN + +typedef struct { + VALUE seed; +} rb_random_t; + +typedef void rb_random_init_func(rb_random_t *, const uint32_t *, size_t); +typedef unsigned int rb_random_get_int32_func(rb_random_t *); +typedef void rb_random_get_bytes_func(rb_random_t *, void *, size_t); + +typedef struct { + size_t default_seed_bits; + rb_random_init_func *init; + rb_random_get_int32_func *get_int32; + rb_random_get_bytes_func *get_bytes; +} rb_random_interface_t; + +#define rb_rand_if(obj) \ + ((const rb_random_interface_t *)RTYPEDDATA_TYPE(obj)->data) + +#define RB_RANDOM_INTERFACE_DECLARE(prefix) \ + static void prefix##_init(rb_random_t *, const uint32_t *, size_t); \ + static unsigned int prefix##_get_int32(rb_random_t *); \ + static void prefix##_get_bytes(rb_random_t *, void *, size_t); \ + /* end */ + +#define RB_RANDOM_INTERFACE_DEFINE(prefix) \ + prefix##_init, \ + prefix##_get_int32, \ + prefix##_get_bytes, \ + /* end */ + +#if defined _WIN32 && !defined __CYGWIN__ +typedef rb_data_type_t rb_random_data_type_t; +# define RB_RANDOM_PARENT 0 +# define RB_RANDOM_DATA_INIT_PARENT(random_data) \ + (random_data.parent = &rb_random_data_type) +#else +typedef const rb_data_type_t rb_random_data_type_t; +# define RB_RANDOM_PARENT &rb_random_data_type +# define RB_RANDOM_DATA_INIT_PARENT(random_data) ((void)0) +#endif + +void rb_random_mark(void *ptr); +double rb_int_pair_to_real_exclusive(uint32_t a, uint32_t b); +double rb_int_pair_to_real_inclusive(uint32_t a, uint32_t b); +void rb_rand_bytes_int32(rb_random_get_int32_func *, rb_random_t *, void *, size_t); +RUBY_EXTERN const rb_data_type_t rb_random_data_type; + +RUBY_SYMBOL_EXPORT_END + +#if defined(__cplusplus) +#if 0 +{ /* satisfy cc-mode */ +#endif +} /* extern "C" { */ +#endif + +#endif /* RUBY_RANDOM_H */ |